src/adaptation/AccessCheck.h

   1 #ifndef SQUID_ADAPTATION__ACCESS_CHECK_H
   2 #define SQUID_ADAPTATION__ACCESS_CHECK_H
   3
   4 #include "base/AsyncJob.h"
   5 #include "adaptation/Elements.h"
   6 #include "adaptation/forward.h"
   7
   8 class HttpRequest;
   9 class HttpReply;
  10 class ACLFilledChecklist;
  11
  12 namespace Adaptation
  13 {
  14
  15 class AccessRule;
  16
  17 // checks adaptation_access rules to find a matching adaptation service
  18 class AccessCheck: public virtual AsyncJob
  19 {
  20 public:
  21     typedef void AccessCheckCallback(ServicePointer match, void *data);
  22
  23     // use this to start async ACL checks; returns true if started
  24     static bool Start(Method method, VectPoint vp, HttpRequest *req,
  25                       HttpReply *rep, AccessCheckCallback *cb, void *cbdata);
  26
  27 protected:
  28     // use Start to start adaptation checks
  29     AccessCheck(Method, VectPoint, HttpRequest *, HttpReply *, AccessCheckCallback *, void *);
  30     ~AccessCheck();
  31
  32 private:
  33     Method method;
  34     VectPoint point;
  35     HttpRequest *req;
  36     HttpReply *rep;
  37     AccessCheckCallback *callback;
  38     void *callback_data;
  39     ACLFilledChecklist *acl_checklist;
  40
  41     typedef int Candidate;
  42     typedef Vector<Candidate> Candidates;
  43     Candidates candidates;
  44     Candidate topCandidate() { return *candidates.begin(); }
  45
  46     void do_callback();
  47     ServicePointer findBestService(AccessRule &r, bool preferUp);
  48     bool done;
  49
  50 public:
  51     void check();
  52     void checkCandidates();
  53     static void AccessCheckCallbackWrapper(int, void*);
  54 #if 0
  55     static EVH AccessCheckCallbackEvent;
  56 #endif
  57     void noteAnswer(int answer);
  58
  59 //AsyncJob virtual methods
  60     virtual bool doneAll() const { return AsyncJob::doneAll() && done;}
  61
  62 private:
  63     CBDATA_CLASS2(AccessCheck);
  64 };
  65
  66 } // namespace Adaptation
  67
  68 #endif /* SQUID_ADAPTATION__ACCESS_CHECK_H */